Lyndon Hernandez, MD
Gastroenterology Physician in Milwaukee, Wisconsin. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 16,567 in Gastroenterology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.
What the federal data shows
Lyndon Hernandez, MD filed 1,944 Medicare Part D claims in 2023 as a Gastroenterology Physician in Milwaukee, Wisconsin.
- 2K
- Part D claims, 2023
- Likely
- board-certified (heuristic)
Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.
Lyndon Hernandez, MD's Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023, across all CMS prescribers nationally
1,944 Top 16% higher than 84% of 1,370,886 prescribers
Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.
Source CMS Medicare Part D Prescriber Public Use File · 2023
Lyndon Hernandez, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations - signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).
What does the federal data show about Lyndon Hernandez, MD?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Wisconsin
How Gastroenterology Physician compares to other specialties among Wisconsin providers
Gastroenterology Physician ranks #61 among Wisconsin's specialties (0.2% of in-state providers)
Each bar is a specialty's share of the Wisconsin provider total, by primary NUCC taxonomy. The highlighted bar is Gastroenterology Physician; the long tail of smaller specialties is omitted for legibility.
Board certification
Not published by CMS
CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Gastroenterology Physician. Verify directly:
The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).
Lyndon Hernandez, MD appears in the CMS NPPES registry as a Gastroenterology Physician provider holding MD credentials at 2801 W KINNICKINNIC RIVER PKWY STE 1080, Milwaukee, WI, 53215, with a listed phone of (414) 908-6506. NPI 1831166503 was issued on 03/02/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Hernandez most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.
Medicare Part D records for calendar year 2023 show 1,944 prescription claims written by this provider, covering 821 Medicare beneficiaries and totaling roughly $737K in drug spend, with an opioid prescribing rate of 0.8%. These figures capture only Medicare Part D, commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.
Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist, always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.
Practice Address
Provider Details
| NPI | 1831166503 |
|---|---|
| Specialty | Gastroenterology Physician |
| Credentials | MD |
| Gender | Male |
| NPI Issued | 03/02/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Lyndon Hernandez, MD's current license status, disciplinary history, and board certifications with the Wisconsin Department of Safety and Professional Services in Wisconsin before relying on this page for a clinical or care decision.
How we sourced this profile
Hospital and facility affiliations
Facilities where Lyndon Hernandez, MD bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" - a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.
Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).
Industry payments received (2024) - CMS Open Payments transparency data
The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for Lyndon Hernandez, MD. Source: openpaymentsdata.cms.gov.
Total received
$128
Largest payer
Medtronic, Inc.
Most common payment type
Food and Beverage
Industry payments are not necessarily indicators of bias, they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.
Medicare Part D Prescribing Data
CMS Medicare Part D prescriber-level data for calendar year 2023.
Prescribing Breakdown
- 30-Day Fills
- 3,030
- Total Day Supply
- 72,240
- Generic Drug Cost
- $77K
- Opioid Claims
- 15 (0.8% rate)
- Antibiotic Claims
- 31
Patient Demographics
- Average Patient Age
- 69.8 years
- Avg HCC Risk Score
- 1.24
- Gender Split
- 59% female / 41% male
- Age Distribution
- <65: 143, 65-74: 427, 75-84: 228, 85+: 23
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Lyndon Hernandez, MD prescribes most
Top Medicare Part D drugs by claim count, 2023
- Pantoprazole Sodium
Pantoprazole Sodium
519 claims
- Omeprazole 188
Omeprazole
188 claims
- Linzess 88
Linzess
88 claims
- Sucralfate 66
Sucralfate
66 claims
- Dexlansoprazole Dr 45
Dexlansoprazole Dr
45 claims
- Cholestyramine 44
Cholestyramine
44 claims
- Mesalamine 31
Mesalamine
31 claims
- Metoclopramide Hcl 30
Metoclopramide Hcl
30 claims
| Drug | Claims |
|---|---|
| Pantoprazole Sodium | 519 |
| Omeprazole | 188 |
| Linzess Linaclotide | 88 |
| Sucralfate | 66 |
| Dexlansoprazole Dr Dexlansoprazole | 45 |
| Cholestyramine Cholestyramine (With Sugar) | 44 |
| Mesalamine | 31 |
| Metoclopramide Hcl | 30 |
| Ursodiol | 24 |
| Famotidine | 23 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Gastroenterology Physician Overview
How Lyndon Hernandez, MD fits within the Gastroenterology Physician landscape nationally.
Lyndon Hernandez, MD's 1,944 claims are above the specialty average of 833.
Nearby Gastroenterology Physician Providers in Wisconsin
Other clinicians with the same primary specialty enrolled in Wisconsin, drawn from the same CMS NPPES roster as Hernandez.
Compare Gastroenterology Physician nationally: see state-by-state distribution →
Before you book an appointment
Use this federal record as your verification checklist, not as a recommendation.
- Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
- Check the active license and any disciplinary history with the Wisconsin medical board, federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Gastroenterology Physician peer on Medicare volume and prescribing patterns. Compare providers
Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.
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Frequently Asked Questions
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Data Sources
- Provider Directory
- CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
- Specialty Classification
- NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
- Prescribing Data
- CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
- Limitations
- Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.
See our complete data methodology for details on how we collect and process government data.
Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).
Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology